HTTP 502 <nil>: 上游 API 调用失败: 流式 API 请求失败: 429 Too Many Requests {"message":"I am...

报错分析

1.错误翻译

原文：429 Too Many Requests {"message":"I am experiencing high traffic, please try again shortly.","reason":"INSUFFICIENT_MODEL_CAPACITY"}
译文：429 请求过多 {"消息":"我正经历高流量，请稍后重试","原因":"模型容量不足"}

2.原因分析

3.解决方案

import requests
from requests.adapters import HTTPAdapter
from urllib3.util.retry import Retry

def call_stream_api_with_retry(url, max_retries=3, backoff_factor=2):
    session = requests.Session()
    # 配置重试策略：针对429/5xx状态码，指数退避
    retry_strategy = Retry(
        total=max_retries,
        backoff_factor=backoff_factor,
        status_forcelist=[429, 500, 502, 503, 504],
        allowed_methods=["POST"]  # 适配流式POST请求
    )
    adapter = HTTPAdapter(max_retries=retry_strategy)
    session.mount("https://", adapter)
    
    try:
        response = session.post(url, stream=True)
        response.raise_for_status()  # 抛出非2xx错误
        return response.iter_content(chunk_size=None)  # 返回流式迭代器
    except requests.exceptions.RequestException as e:
        print(f"请求最终失败: {str(e)}")
        return None

# 使用示例
api_url = "YOUR_STREAM_API_ENDPOINT"
stream_iter = call_stream_api_with_retry(api_url)
if stream_iter:
    for chunk in stream_iter:
        # 处理流式数据（如逐块解析）
        pass

4.️ 预防措施